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About this map

Residents per square mile of land (water excluded). Under 50 is rural, a few hundred is small-town, 2,500+ is urban, and 10,000+ is big-city dense.

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024).

U.S.
95/sq mi
Massachusetts
903/sq mi
Rankings
Full list

Top and bottom zip codes in Massachusetts

Zip codes with 1,000+ residents

Most densely populated zip codes

See all
  1. 102113Boston65,825/sq mi
  2. 202111Boston42,893/sq mi
  3. 302115Boston41,779/sq mi
  4. 402116Boston33,864/sq mi
  5. 502114Boston32,546/sq mi
  6. 602215Boston27,807/sq mi
  7. 702118Boston26,605/sq mi
  8. 801063Northampton25,818/sq mi
  9. 902139Cambridge25,795/sq mi
  10. 1002120Roxbury Crossing24,690/sq mi

Most sparsely populated zip codes

See all
  1. 101008Blandford22/sq mi
  2. 201339Charlemont23/sq mi
  3. 301270Windsor32/sq mi
  4. 401366Petersham32/sq mi
  5. 501368Royalston33/sq mi
  6. 601340Colrain34/sq mi
  7. 701034Granville34/sq mi
  8. 801011Chester36/sq mi
  9. 901223Becket36/sq mi
  10. 1001026Cummington36/sq mi

Population density by county in Massachusetts

  1. 1Suffolk County13,477/sq mi
  2. 2Middlesex County2,003/sq mi
  3. 3Norfolk County1,843/sq mi
  4. 4Essex County1,651/sq mi
  5. 5Bristol County1,053/sq mi
  6. 6Plymouth County813/sq mi
  7. 7Hampden County750/sq mi
  8. 8Barnstable County588/sq mi
  9. 9Worcester County574/sq mi
  10. 10Nantucket County314/sq mi
  11. 11Hampshire County307/sq mi
  12. 12Dukes County203/sq mi
  13. 13Berkshire County140/sq mi
  14. 14Franklin County102/sq mi

Questions about this map

Which zip code has the highest population density in Massachusetts?

Among zip codes with at least 1,000 residents, 02113 (Boston, MA) has the highest: 65,825/sq mi.

Which zip code has the lowest population density in Massachusetts?

01008 (Blandford, MA) has the lowest: 22/sq mi.

What is the population density for the United States?

95/sq mi; in Massachusetts it is 903/sq mi.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). Residents per square mile of land (water excluded). Under 50 is rural, a few hundred is small-town, 2,500+ is urban, and 10,000+ is big-city dense.

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